USB power adaptor



FIG. 1 is a perspective view of a USB power adaptor having the design of my invention;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front view thereof, where the front and rear sides of the design are mirror images of each other;

FIG. 4 is a side view thereof, where the right and left sides of the design are mirror images of each other; and,

FIG. 5 is a bottom plan view thereof.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

The ornamental design for a USB power adaptor, as shown and described. 